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  5. GLM 5.3 FlashXvsGPT-5.2 Chat
Updated Sep 2026

GLM 5.3 FlashXvsGPT-5.2 Chat

GLM 5.3 FlashX is cheaper than GPT-5.2 Chat at $0.37/M vs $1.75/M input tokens.

GLM 5.3 FlashX and GPT-5.2 Chat compared across 12 shared prompts
SpecGLM 5.3 FlashXGPT-5.2 Chat
Input price$0.37/M tokens$1.75/M tokens
Output price$1.25/M tokens$14/M tokens
Context window1.0M tokens128K tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedSep 2026Dec 2025
Side by side

Same prompt, both answers

Opening lines from 2 of the 12 prompts both answered. Formatting stripped, words untouched.

Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

GLM 5.3 FlashX172 words
Golden Honey Garlic Chickpea Crunch A crispy, sweet-savory skillet dish that works as a snack, side, or topping for rice. Ingredients (7): 1 can chickpeas (drained, patted dry) 3 tbsp honey 3 tbsp soy sauce 3 cloves garlic (minced) 2 tbsp olive oil ½ tsp red pepper flakes 2 tbsp sesame seeds (or crushed peanuts) Prep…
Read the full answer
GPT-5.2 Chat140 words
Golden Honey-Garlic Skillet Bites Type: Savory Serves: 2–3 Prep Time: 5 minutes Cook Time: 15 minutes Ingredients (7 Pantry Staples) Chicken breast (or thighs), cubed Honey Soy sauce Garlic (fresh or powdered) Olive oil Black pepper Salt Instructions Heat the Pan: Warm olive oil in a skillet over medium heat.
Read the full answer

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

GLM 5.3 FlashX347 words
1-Month Health & Longevity Starter Plan Week 1: Build the Foundation 🥗 Diet Add one vegetable or fruit to every meal (don't restrict anything yet) Drink a glass of water when you wake up each morning 🏃 Exercise Take a 10–15 minute walk daily (same time each day builds the habit) Do 2 sets of 5 squats and 10 wall…
Read the full answer
GPT-5.2 Chat548 words
Here’s a simple, realistic 1‑month plan designed for beginners. The goal is not perfection, but building habits that support long-term health and longevity. We’ll focus on three high-impact areas: Nutrition, Movement, and Sleep & Stress.
Read the full answer
Our Verdict
GLM 5.3 FlashX
GLM 5.3 FlashX
GPT-5.2 Chat
GPT-5.2 ChatRunner-up

Not enough votes to call it. On the specs, GLM 5.3 FlashX has the edge: newer, bigger context window.

GLM 5.3 FlashX costs 11x less per token.

Too close to call
API pricing

Cost per 1M tokens

GLM 5.3 FlashX
Input
$0.37
4.7× cheaper
Output
$1.25
11× cheaper
GPT-5.2 Chat
Input
$1.75
Output
$14.00

GLM 5.3 FlashX is cheaper on both: 4.7× input, 11× output.

Where to run it

2 hosts

GLM 5.3 FlashX1 host
HostInOutContextUptime
Z.aifp8$0.37 in·$1.25 out·1M·100% up
GPT-5.2 Chat1 host
HostInOutContextUptime
Azure AI Foundry$1.75 in·$14.00 out·128k—

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

GLM 5.3 FlashX is developed by Zhipu AI while GPT-5.2 Chat is developed by OpenAI. GLM 5.3 FlashX has a 1.0M token context window vs GPT-5.2 Chat's 128K. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

It depends on your use case. GLM 5.3 FlashX and GPT-5.2 Chat each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

GLM 5.3 FlashX costs $0.37/M input tokens and GPT-5.2 Chat costs $1.75/M input tokens. GLM 5.3 FlashX is $1.38/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of GLM 5.3 FlashX and GPT-5.2 Chat across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Keep exploring

More comparisons

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GLM 5.3 FlashX logoGLM 5.3 logo
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GPT-5.2 Chat logoTernary Bonsai 2 27B logo
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Same lab, same size, long tail

GLM 5.3 FlashX logoGLM 5.3 Flash logo
GLM 5.3 FlashX vs GLM 5.3 FlashSame lab
GLM 5.3 FlashX logoGLM 5.2 logo
GLM 5.3 FlashX vs GLM 5.2Same lab
GPT-5.2 Chat logoGPT-6 Astra Pro logo
GPT-5.2 Chat vs GPT-6 Astra ProSame lab
GPT-5.2 Chat logoGPT-6 Astra logo
GPT-5.2 Chat vs GPT-6 AstraSame lab
GLM 5.3 FlashX logoDeepSeek V3 (March 2024) logo
GLM 5.3 FlashX vs DeepSeek V3 (March 2024)New provider
GLM 5.3 FlashX logoDeepSeek V3.2 logo
GLM 5.3 FlashX vs DeepSeek V3.2Same size
GLM 5.3 FlashX logoDeepSeek V3.2 Exp logo
GLM 5.3 FlashX vs DeepSeek V3.2 ExpSame size
GLM 5.3 FlashX logoDeepSeek V3.2 Speciale logo
GLM 5.3 FlashX vs DeepSeek V3.2 SpecialeSame size

Model pages

GLM 5.3 FlashX logo
GLM 5.3 FlashX12 outputs, specs and price
GPT-5.2 Chat logo
GPT-5.2 Chat53 outputs, specs and price
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